<template>
    <div class="card">
      <!-- 标题区域 -->
      <div class="card-header">学习计划表</div>
      <!-- 提交区域 -->
      <div class="card-body">
        <form @submit.prevent="add">
          <div class="row g-4">
            <!-- 学习科目 -->
            <div class="col-auto">
              <div class="input-group mb-3">
                <span class="input-group-text" id="basic-addon1">学习科目</span>
                <input type="text" class="form-control" placeholder="请输入学习科目" v-model.trim="subject" />
              </div>
            </div>
            <!-- 学习任务 -->
            <div class="col-auto">
              <div class="input-group mb-3">
                <span class="input-group-text" id="basic-addon1">学习内容</span>
                <textarea class="form-control" v-model.trim="content" placeholder="请输入学习内容"
                  :style="{ height: '32px' }"></textarea>
              </div>
            </div>
            <!-- 学习地点 -->
            <div class="col-auto">
              <div class="input-group mb-3">
                <span class="input-group-text" id="basic-addon1">学习地点</span>
                <select class="form-select form-select-sm" v-model="selectedOption">
                  <option v-for="option in options" :value="option.place" :key="option.placeCode">
                    {{ option.place }}
                  </option>
                </select>
              </div>
            </div>
            <!-- 添加按钮 -->
            <div class="col-auto">
              <button type="submit" class="btn btn-primary">添加</button>
            </div>
          </div>
        </form>
      </div>
    </div>
    <table class="table table-striped table-hover table-bordered">
      <thead>
        <tr>
          <th scope="col">序号</th>
          <th scope="col">学习科目</th>
          <th scope="col">学习内容</th>
          <th scope="col">学习地点</th>
          <th scope="col">完成状态</th>
          <th scope="col">操作</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="item in list" :key="item.id">
          <td>{{ item.id }}</td>
          <td>{{ item.subject }}</td>
          <td>{{ item.content }}</td>
          <td>{{ item.place }}</td>
          <td>
            <div class="form-check form-switch">
              <input class="form-check-input" type="checkbox" role="switch" :id="'cb' + item.id" v-model="item.status" />
              <label class="form-check-label" :for="'cb' + item.id" v-if="item.status">已完成</label>
              <label class="form-check-label" :for="'cb' + item.id" v-else>未完成</label>
  
            </div>
          </td>
          <td>
            <a href="javascript:;" @click="remove(item.id, item.status)">删除</a>
          </td>
        </tr>
      </tbody>
    </table>
  </template>
   
  <script setup>
  import { ref } from 'vue'
  const list = ref([
    {
      id: '1',
      subject: 'Vue.js前端实战开发',
      content: '学习指令，例如v-if、v-for、v-model等',
      place: '自习室',
      status: false,
    },
  ])
  let subject = ref('')
  let content = ref('')
  let nextId = ref('')
  let selectedOption = ref('自习室')
  let options = ref([
    { placeCode: 0, place: '自习室', },
    { placeCode: 1, place: '图书馆', },
    { placeCode: 2, place: '宿舍', },
  ])
  
  let remove = (id, status) => {
    if (status) {
      list.value = list.value.filter(item => item.id !== id)
    } else {
      alert('请完成该学习计划后再进行删除操作！')
    }
  }
  
  let add = () => {
    if (subject.value === '') {
      alert('学习科目为必填项！')
      return 
    }
    nextId.value = Math.max(...list.value.map(item => item.id)) + 1
    const obj = {
      id: nextId.value,
      subject: subject.value,
      content: content.value,
      place: selectedOption.value,
      status: false,
    }
    list.value.push(obj)
    subject.value = ''
    content.value = ''
    selectedOption.value = '自习室'
  }
  </script>